Crystal structure of the low-temperature form of K3PO4

Authors :: G. Sh. Shekhtman
E. I. Burmakin
Denis Sheptyakov
I. F. Berger
S. N. Bushmeleva
Yu. S. Ponosov
A. M. Balagurov
V. I. Voronin
Vladimir G. Zubkov
Alexander P. Tyutyunnik
E. G. Vovkotrub
N. V. Proskurnina
Source :: Inorganic Materials. 42:908-913
Publication Year :: 2006
Publisher :: Pleiades Publishing Ltd, 2006.
Abstract: The crystal structure of the low-temperature form of K3PO4 has been determined for the first time using neutron diffraction (Rietveld method) and Raman spectroscopy: orthorhombic cell (sp. gr. Pnma, Z = 4), lattice parameters a = 1.12377(2) nm, b = 0.81046(1) nm, c = 0.59227(1) nm. The structure is made up of isolated [PO4] tetrahedra, with the potassium ions in between.